Camera assembly and mobile electronic device

ABSTRACT

A camera assembly and a mobile electronic device are provided. The camera assembly includes at least two image sensors. Each image sensor includes a pixel array and a control circuit. The pixel array includes a light sensing region and an imaging region. The control circuit is configured to receive a light sensing instruction to control the light sensing region to detect an illumination intensity and to receive an imaging instruction to control the light sensing region and the imaging region to collectively perform a photographic process to obtain an image. The present disclosure further provides a mobile electronic device.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on and claims priority of Chinese PatentApplication No. 201710305278.3, filed on May 3, 2017, the entirecontents of which are incorporated herein by reference.

FIELD

The present disclosure relates to electronic devices, and moreparticularly to a camera assembly, and a mobile electronic device.

BACKGROUND

Typically, a front camera configured to capture a selfie and a lightsensor configured to detect ambient brightness and adjust brightness ofa display screen according to the ambient brightness can be set on aphone. However, since the front camera and the light sensor areseparately set in the most of phones at present, the space for locatingthe display screen in the phone decreases, thus leading to a lowscreen-to-body ratio of the phone.

DISCLOSURE

Embodiments of the present disclosure provide a camera assembly. Thecamera assembly includes at least two image sensors. Each image sensorincludes a pixel array and a control circuit. The pixel array includes alight sensing region and an imaging region. The control circuit isconfigured to receive a light sensing instruction to control the lightsensing region to detect an illumination intensity; and to receive animaging instruction to control the light sensing region and the imagingregion to collectively perform a photographic process to acquire animage.

The mobile electronic device according to embodiments of the presentdisclosure includes the camera assembly described above. The mobileelectronic device further includes a processor. The processor isconfigured to generate the light sensing instruction and the imaginginstruction.

Additional aspects and advantages of embodiments of present disclosurewill be given in part in the following descriptions, become apparent inpart from the following descriptions, or be learned from the practice ofthe embodiments of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other aspects and advantages of embodiments of the presentdisclosure will become apparent and more readily appreciated from thefollowing descriptions made with reference to the drawings.

FIG. 1 is a schematic diagram of a camera assembly according to anembodiment of the present disclosure.

FIG. 2 is a schematic stereogram of an electronic device according to anembodiment of the present disclosure.

FIG. 3 is a front view and a back view of an electronic device accordingto an embodiment of the present disclosure.

FIG. 4 is a schematic diagram of a different camera assembly accordingto an embodiment of the present disclosure.

FIG. 5 is a front view and a back view of an electronic device accordingto an embodiment of the present disclosure.

FIG. 6 is a front view and a back view of an electronic device accordingto an embodiment of the present disclosure.

FIGS. 7-15 are schematic diagrams of a pixel array according to anembodiment of the present disclosure.

EMBODIMENTS OF THE PRESENT DISCLOSURE

Reference will now be made in detail to exemplary embodiments, examplesof which are illustrated in the accompanying drawings, in which the sameor similar reference numbers throughout the drawings represent the sameor similar elements or elements having same or similar functions.Embodiments described below with reference to drawings are merelyexemplary and used for explaining the present disclosure, and should notbe understood as limitation to the present disclosure.

In the present disclosure, unless specified or limited otherwise, astructure in which a first feature is “on” a second feature may includean embodiment in which the first feature directly contacts the secondfeature, and may also include an embodiment in which the first featureindirectly contacts the second feature via an intermediate medium.Moreover, a structure in which a first feature is “on”, “over” or“above” a second feature may indicate that the first feature is rightabove the second feature or obliquely above the second feature, or justindicate that a horizontal level of the first feature is higher than thesecond feature. A structure in which a first feature is “below”, or“under” a second feature may indicate that the first feature is rightunder the second feature or obliquely under the second feature, or justindicate that a horizontal level of the first feature is lower than thesecond feature.

Referring to FIG. 1 and FIG. 2, the camera assembly 100 according toembodiments of the present disclosure includes two lens assemblies 10.Each assembly 10 includes an image sensor 12. Each image sensor 12includes a pixel array 122 and a control circuit 124. The pixel array122 includes a light sensing region 1222 and an imaging region 1224. Thecontrol circuit 124 is configured to receive a light sensing instructionto control the light sensing region 1222 to detect an illuminationintensity. The control circuit 124 is further configured to receive animaging instruction to control the light sensing region 1222 and theimaging region 1224 to collectively perform a photographic process toacquire an image.

In some implementations, the lens assembly 10 further includes a filter14. The filter 14 and the pixel array 122 are arranged correspondingly.Light L would reach the light sensing region 1222 and the imaging region1224 in the pixel array 122 after passing through the filter 14.

In some implementations, the filter 14 may be an RGB filter. The RGBfilter can be arranged in Bayer array to allow light L to pass throughthe filter 14 and pass through the light sensing region 1222 and theimaging region 1224, so as to acquire a color image.

Further, in some implementations, the filter 14 may be a visible filter.The visible filter and the pixel array 122 are arranged correspondinglyto allow light L to pass through the filter 14 and to reach the lightsensing region 1222 and the imaging region 1224 in the pixel array 122.In this way, after the light L passes through the visible filter, onlyvisible light of the light L can reach the light sensing region 1222 andthe imaging region 1224 while light with other wavelengths is blocked,such that the light sensing region 1222 can be configured to detect theillumination intensity of the visible light and the light sensing region1222 and the imaging region 1224 can be configured to acquire the image,thus avoiding interference of invisible light such as infrared light,ultraviolet light or the like in the light, and improving accuracy oflight detection and quality of the image.

The camera assembly 100 according to embodiments of the presentdisclosure can be applied in an electronic device 1000 according toembodiments of the present disclosure. The electronic device 1000further includes a processor 200. The processor 200 is configured togenerate the light sensing instruction and the imaging instruction. Insome implementations, the electronic device 1000 further includes adisplay screen 300. The display screen 300 is configured to display datainformation such as video, image, text, icon and the like.

In the camera assembly 100 and the electronic device 1000 mentionedabove, the light sensing region 1222 and the imaging region 1224 areintegrally disposed in one pixel array 122. In this way, it isunnecessary to set both a camera component and a light sensor component,such that the number of components is reduced, a ratio of space forlocating the display screen 300 can be increased, thus increasing thescreen-to-body ratio of the electronic device 1000. The light sensingregion 1222 may further assists the imaging region 1224 in imaging, suchthat the imaging effect can be optimized. Further, the camera assembly100 according to embodiments of the present disclosure includes two lensassemblies 10. The light sensing regions 1222 in the two lens assemblies10 can detect the illumination intensity of the current environmentsimultaneously, such that the accuracy of detecting the illuminationintensity can be improved. The two lens assemblies 10 can realizeimaging simultaneously or on time-sharing, thus optimizing the imagingeffect.

The electronic device 1000 may be a cell phone, a tablet computer, anotebook computer or the like, which is not limited herein. Theelectronic device 1000 according to embodiments of the present will beexplained by taking a cell phone as an example. The illuminationintensity obtained by the image sensor 12 or the camera assembly 100 canbe considered as the basis for adjusting display brightness of thedisplay screen 300 of the electronic device 1000. For example, when theillumination intensity is high, the display brightness of the displayscreen 300 can be increased. When the illumination intensity is changedfrom a high value to a value less than a certain threshold, it can bedetermined that a user is answering the phone, such that the displayscreen 300 can be turned off. The image acquired by the image sensor 12or the camera assembly 10 can be displayed on the display screen 300, orstored in storage medium of the electronic device 1000 for reading ortransmitting.

The camera assembly 100 together with the display screen 300 can be seton a front face 400 of the electronic device 1000. The camera assembly100 can also be disposed on a back face 500 or side face of theelectronic device 1000. The two lens assemblies 10 of the cameraassembly 100 can be arranged laterally or longitudinally.

The processor 200 is configured to generate the light sensinginstruction and the imaging instruction. Further, the processor 200 isconfigured to transmit the light sensing instruction and the imaginginstruction to the control circuit 124 corresponding to the lensassembly 10. In some embodiments, the processor 200 can separatelygenerate and transmit the light sensing instruction, or separatelygenerate and transmit the imaging instruction. The light sensinginstruction and the imaging instruction can be generated by theprocessor 200 when receiving an input operation. The input operation canbe an operation inputted by the user or by an application environment.For example, in the cell phone according to embodiments of the presentdisclosure, the light sensing instruction and the imaging instructioncan be generated by the processor 200 after receiving an operation oftouching the cell phone or pressing a certain function key (including aphysical key, a virtual key) from the user. In some embodiments, thelight sensing instruction and the imaging instruction can be generatedby the processor 200 when the system time of the cell phone reaches apredetermined time point.

A single control circuit 124 can be configured to separately receive thelight sensing instruction to control the light sensing region 1222 todetect the illumination intensity, or separately receive the imaginginstruction to control the light sensing region 1222 and the imagingregion 1224 to collectively acquire the image. When the control circuit124 does not receive the light sensing instruction or the imaginginstruction, the light sensing region 1222 and the imaging region 1224may be in the non-operating state.

The two control circuits 124 may receive the light sensing instructionand the imaging instruction separately. The camera assembly 100 maygenerate two light sensing instructions and two imaging instructions,which may be a first light sensing instruction, a second light sensinginstruction, a first imaging instruction and a second imaginginstruction. The first light sensing instruction may be sent only to afirst control circuit 124, but not to a second control circuit 124. Thesecond light sensing instruction may be sent only to the second controlcircuit 124, but not to the first control circuit 124. Similarly, thefirst imaging instruction may be sent only to the first control circuit124, but not to the second control circuit 124. The second imaginginstruction may be sent only to the second control circuit 124, but notto the first control circuit 124. The two control circuits 124 mayreceive the light sensing instruction and the imaging instructionsimultaneously. For example, the camera assembly 100 may generate alight sensing instruction or an imaging instruction. The light sensinginstruction is sent to the first control circuit 124 and the secondcontrol circuit 124 simultaneously. In other words, one light sensinginstruction may be used to control two light sensing regions 1222 todetect the illumination intensity. Similarly, the imaging instruction issent to the first control circuit 124 and the second control circuitsimultaneously. In other words, one imaging instruction may be used tocontrol two light sensing regions 1222 and two imaging regions 1224 toacquire images.

In some embodiments, the pixel array 122 includes a plurality of pixelsarranged in an array 122. The pixels in the imaging region 1224 areconfigured to acquire the image. The pixels in the light sensing region1222 are configured to detect the illumination intensity or acquire theimage together with the imaging region 1224. Each pixel in the pixelarray 122 can generate corresponding electric quantity change accordingto the illumination intensity of light L reaching the pixel. The controlcircuit 124 is electrically connected to each pixel. The control circuit124 acquires the electric quantity change generated by the correspondingpixel according to the received light sensing instruction or imaginginstruction, and further analyzes the changing value of the electricquantity via the processor 200 to obtain the illumination intensity ofthe light reaching the corresponding pixel or further performscomprehensive analysis on the illumination intensities of light reachingseveral pixels via the processor 200 to acquire the image.

In some implementations, the control circuit 124 is further configuredto receive the light sensing instruction to control the light sensingregion 1222 to perform a photographic process to detect a colortemperature of a current environment when the image sensor is in animaging mode; and to control the imaging region 1224 to perform thephotographic process according to the color temperature to acquire acolor-temperature adjusted image.

In some embodiments, both the light sensing region 1222 and the imagingregion 1224 in each image sensor 12 have a filter 14 disposedthereabove. In embodiments of the present disclosure, the filter isexplained by taking the RGB color filter 14 as an example. When thecontrol circuit 124 receives an imaging instruction, the control circuit124 controls the light sensing region 1222 to perform the photographicprocess. Light in the current environment passes through the RGB filter14 above the light sensing region 1222 and reaches each pixel of thelight sensing region 1222. The light sensor component corresponding toeach pixel in the light sensing region 1222 may generate the electricquantity change to obtain a red pixel value, a blue pixel value or agreen pixel value corresponding to each pixel. The processor 200 detectsthe color temperature of the current environment by analyzing the redpixel value, the blue pixel value and the green pixel value. The colortemperature of the current environment reflects a gain value of eachcolor (R, G, B) in light of the current environment. Subsequently, thecontrol circuit 124 controls each pixel in the imaging region 1224 toperform the photographic process and realize imaging to obtain aplurality of pixel values. The processor 200 adjusts the gain values ofeach color R, G or B of each pixel in the imaging region 1224 accordingto the color temperature, and performs an interpolation processing and ade-mosaic processing, such that the color-temperature adjusted imageobtained finally has color approaching to actual color of each object inthe current environment. In this way, color cast of the acquired imagecan be avoided. When the electronic device 1000 is used to take apicture at night, it is required to supplement light due to a dim lightin night scene. However, light emitted by a related supplementary lightsource typically influences the color temperature in the currentenvironment, such that it is required to realize auxiliary imaging basedon the color temperature detected by the light sensing region 1222 tooptimize the imaging effect.

In some implementations, the control circuit 1224 is further configuredto receive an imaging instruction to control the light sensing region1222 and the imaging region 1224 to collectively perform thephotographic process to acquire a merged image.

In some embodiments, both the light sensing region 1222 and the imagingregion 1224 in each image sensor 12 have a filter 14 disposedthereabove. In embodiments of the present disclosure, the filter isexplained by taking the RGB color filter 14 as an example. When theelectronic device 1000 is in the imaging mode, the light L in thecurrent environment passes through the RGB filter 14 above the lightsensing region 1222 and the imaging region 1224 and reaches each pixelin the light sensing region 1222 and the imaging region 1224. Each pixelin the light sensing region 1222 and the imaging region 1224 can obtaina red pixel value, a blue pixel value or a green pixel value.Subsequently, an interpolation and de-mosaic processing is performed oneach pixel value to acquire the merged image. The merged image indicatesan image obtained when the light sensing region 1222 and the imagingregion 1224 collectively realize imaging. To this, when the number ofpixels in the light sensing region 1222 is increased to realize imaging,an area of the finally acquired image can be increased, thus optimizingthe imaging quality.

Referring FIG. 2 again, in some implementations, there is a singlecamera assembly 100. The single camera assembly 100 is configured as afront camera assembly 100 a. When light sensing sensors 1222 of twoimage sensors 12 detect a first illumination intensity and a secondillumination intensity respectively, the processor 200 is configured toselect a maximum of the first illumination intensity and the secondillumination intensity as a final illumination intensity; or theprocessor 200 is configured to obtain a mean value of the firstillumination intensity and the second illumination intensity as thefinal illumination intensity.

The front camera assembly 100 a and the display screen 300 are disposedon the front face 400 of the electronic device 1000. The front cameraassembly 100 a may be configured to detect the illumination intensity onthe front face 400 and acquire the image opposite to the front face 400simultaneously.

In this way, the processor 200 can obtain the final illuminationintensity after perform the comprehensive analysis on the firstillumination intensity and the second illumination intensityrespectively obtained by two light sensing regions 1222. The electronicdevice 1000 further performs corresponding control according to thefinal illumination intensity, for example adjusting the displaybrightness of the display screen 300. In some implementations, duringthe usage, there may be a situation that two lens assemblies 10 receivevery different illumination intensities. For example, when the useroperates the electronic device 1000 under the shade of a tree, one lensassembly 10 may be in the shade while the other lens assembly 10 may beexposed under direct sunlight, such that there may be large differencebetween the first illumination intensity and the second illuminationintensity detected by two light sensing regions 1222. The processor 200processes the first illumination intensity and the second illuminationintensity to obtain the final illumination intensity and adjusts thedisplay brightness of the display screen 300 according to the finalillumination intensity, thus preventing the display brightness frombeing too high or too low.

Further, the two lens assemblies 10 in the front camera assembly mayrealize imaging simultaneously or on time-sharing.

Referring to table 1, each light sensing region 1222 in the front cameraassembly 100 a has three operating modes, which are light sensing mode,imaging mode, and idle mode. Each imaging region 1224 has two operatingmodes, which are imaging mode and idle mode. Thus, the operating mode ofthe front camera assembly 100 a may be one of nine situations in thetable 1.

The light sensing mode means that the light sensing region 1222 detectsthe illumination intensity. The imaging mode means that the lightsensing region 1222 and the imaging region 1224 collectively perform thephotographic process to acquire the image. The idle mode of the lightsensing region 1222 means that the light sensing region 1222 is not inthe light sensing mode or in the imaging mode. The idle mode of theimaging region 1224 means that the imaging region 1224 is not in theimaging mode. Further, when the imaging region 1224 is in the imagingmode, the light sensing region 1222 is in the imaging mode too.

TABLE 1 component Front camera assembly Image sensor 1 Image sensor 2No. Light sensing region 1 Imaging region 1 Light sensing region 2Imaging region 2 operating mode 1 Light sensing mode idle mode Lightsensing mode idle mode 2 Light sensing mode idle mode idle mode idlemode 3 idle mode idle mode Light sensing mode idle mode 4 Light sensingmode idle mode Imaging mode Imaging mode 5 idle mode idle mode Imagingmode Imaging mode 6 Imaging mode Imaging mode Light sensing mode idlemode 7 Imaging mode Imaging mode idle mode idle mode 8 Imaging modeImaging mode Imaging mode Imaging mode 9 idle mode idle mode idle modeidle mode

In some operation modes in table 1, the two lens assemblies 10 in thefront camera assembly 100 a can realize imaging simultaneously tooptimize the imaging quality. For example, the two lens assemblies 10 inthe front camera assembly 100 a can realize imaging simultaneously toobtain multiple frames of first images and multiple frames of secondimages. The processor 200 may analyze the multiple frames of firstimages and the multiple frames of second images and screens out a frameof image with highest imaging quality as a final image. In anotherembodiment, the processor 200 may perform merging and splicingprocessing on the first image and the second image to enhance color anddefinition of the final image.

In some operation modes in table 1, one lens assembly 10 in the frontcamera assembly 100 a may be configured to assist the other lensassembly 10 in imaging, so as to optimize the imaging quality. Forexample, the one lens assembly 10 in the front camera assembly 100 a maydetect the current ambient brightness, and the processor 200 analyzesthe ambient brightness to control exposure time of each light sensorcomponent corresponding to each pixel in the lens assembly 10 to obtainthe image with suitable brightness. In this way, during the imaging ofthe camera assembly 100, one lens assembly 10 is used to detect theambient brightness to assist the other lens assembly 10 in imaging, suchthat problems that the final image is subject to overexposure or has toolow brightness can be avoided, thus improving the image quality.

Further, the front camera assembly 10 can be configured that, when onelens assembly 10 in the front camera assembly 100 a is in the imagingmode, the other lens assembly 10 is in the light sensing mode. The lensassembly being in the imaging mode refers to the image sensor of thelens assembly being in the imaging mode, which means that both theimaging region and the light sensing region in the image sensor are inthe imaging mode. The lens assembly being in the light sensing moderefers to the image sensor of the lens assembly being in the lightsensing mode, which means that the light sensing region in the imagesensor is in the light sensing mode. The light sensing region 1222 ofthe lens assembly 10 in the light sensing mode detects the illuminationintensity as the illumination intensity of the camera assembly 100. Inthis way, when one lens assembly 10 in the front camera assembly 100 arealizes imaging, the other lens assembly may detect the illuminationintensity of the environment to control the brightness of the displayscreen 300 to change, thus facilitating a preview when the user takes apicture, and improving the user experience.

In some operation modes in table 1, the two lens assemblies 10 in thefront camera assembly 100 a may be enabled in sequence to realizeimaging so as to optimize the imaging quality. For example, one lensassembly 10 in the front camera assembly 100 a adopts a wide-angle lens,while the other lens assembly 10 adopts a telephoto lens. When thecamera assembly 100 realizes imaging, the processor 200 enables the lensassembly 10 using the wide-angle lens to realize imaging. If theelectronic device 1000 detects that the user takes a scaling-upoperation for a preview image and the processor 200 derives an enlargingscale of the preview image higher than a predetermined value, theprocessor 200 immediately enables the lens assembly 10 using thetelephoto lens to realize imaging. The wide-angle lens has a big fieldof view and a short focal length, while the telephoto lens has a smallfield of view and a long focal length. When the user takes thescaling-up operation for the preview image, it indicates that the userwould like to take a picture of distant view, in this case, it needs toadopt the telephoto lens to get a clear picture of the distant view,thus it needs to switch the camera assembly 100 to the lens assembly 10using the telephoto lens to realize imaging so as t to improve thedefinition of the image.

However, in some usage scenarios of the electronic device 1000, theremay be a situation that the illumination intensities on the front face400 and the back face 500 of the electronic device 1000 are differentobviously. For example, the user may put the cell phone on the tablewith the front face 400 opposite to the table top. If the displaybrightness of the display screen 300 is controlled only according to theillumination intensity on the front face 400 detected by the frontcamera assembly 100 a, the display screen 300 may be in a non-displaystate or in a low-brightness-display state. When the user suddenly picksup the electronic device 1000 for using, the electronic device 1000needs to awaken the display screen 300 or to increase the brightness ofthe display screen 300 in a short time. When the user frequently picksup and puts down the electronic device 1000, the electronic device 1000would consume a great quantity of electricity energy for controlling thebrightness of the display screen 300. For another example, if the useroperates the electronic device 1000 when he/she lies down indoor, theback face 500 may be opposite to a light source (such as a ceiling lamp)amounted on the ceiling, such that the illumination intensity on theback face 500 may be greater than that on the front face 400. In thiscase, if the brightness of the display screen 300 is adjusted onlyaccording to the illumination intensity on the front face 400, it ispossible that the user cannot make out the displayed content due to thelow brightness. Thus, if the processor 200 can process both theillumination intensity on the front face 400 and the illuminationintensity on the back face 500 of the electronic device 1000, an optimumillumination intensity can be obtained.

Referring to FIG. 3, in some implementations, there is a plurality ofcamera assemblies 100. One of them is configured as a front cameraassembly 100 a, a further of them is configured as a rear cameraassembly 100 b. The front camera assembly 100 a and the display screen300 are disposed on the front face 400 of the electronic device 1000.The front camera assembly 100 a may be configured to detect theillumination intensity on the front face 400 and acquire the imageopposite to the front face 400 simultaneously. The rear camera assembly100 b is disposed on the back face 500 of the electronic device 1000.The rear camera assembly 100 b may be configured to detect theillumination intensity on the back face 500 and acquire the imageopposite to the back face 500 simultaneously.

Referring to table 2, each light sensing region 1222 in the front cameraassembly 100 a has three operating modes, which are light sensing mode,imaging mode and idle mode. Each imaging region 1224 in the front cameraassembly 100 a has two operating modes, which are imaging mode and idlemode. Each light sensing region 1222 in the rear camera assembly 100 bhas three operating modes, which are light sensing mode, imaging modeand idle mode. Each imaging region 1224 in the rear camera assembly 100b has two operating modes, which are imaging mode and idle mode. Theoperating mode of the front camera assembly 100 a may include severalsituations in table 2. The operating mode of the rear camera assembly100 b may include several situations in table 2.

The light sensing mode means that the light sensing region 1222 detectsthe illumination intensity. The imaging mode means that the lightsensing region 1222 and the imaging region 1224 collectively perform thephotographic process to acquire the image. The idle mode of the lightsensing region 1222 means that the light sensing region 1222 is not inthe light sensing mode or in the imaging mode. The idle mode of theimaging region 1224 means that the imaging region 1224 is not in theimaging mode. Further, when the imaging region 1224 is in the imagingmode, the light sensing region 1222 is in the imaging mode too.

TABLE 2 component Front camera assembly Rear camera assembly Imagesensor 1 Image sensor 2 Image sensor 1 Image sensor 2 Light Light LightLight sensing Imaging sensing Imaging sensing Imaging sensing ImagingNo. region 1 region 1 region 2 region 2 region 1 region 1 region 2region 2 operating mode 1 Light idle mode Light idle mode Light idlemode Light idle mode sensing sensing sensing sensing mode mode mode mode2 Light idle mode idle mode idle mode Light idle mode idle mode idlemode sensing sensing mode mode 3 idle mode idle mode Light idle modeidle mode idle mode Light idle mode sensing sensing mode mode 4 Lightidle mode Imaging Imaging Light idle mode Imaging Imaging sensing modemode sensing mode mode mode mode 5 idle mode idle mode Imaging Imagingidle mode idle mode Imaging Imaging mode mode mode mode 6 ImagingImaging Light idle mode Imaging Imaging Light idle mode mode modesensing mode mode sensing mode mode 7 Imaging Imaging idle mode idlemode Imaging Imaging idle mode idle mode mode mode mode mode 8 ImagingImaging Imaging Imaging Imaging Imaging Imaging Imaging mode mode modemode mode mode mode mode 9 idle mode idle mode idle mode idle mode idlemode idle mode idle mode idle mode . . . . . . . . . . . . . . . . . . .. . . . . . . .

The operating mode of the front camera assembly 100 a and the operatingmode of the rear camera assembly 100 b form a plurality of combinations.However, because the length is limited, table 2 only lists somecombinations of operating modes. There may be other combinations ofoperating modes for the front camera assembly 100 a and the rear cameraassembly 100 b, which are not listed herein.

In some operating modes, for example, in the operating state No. 1, twolight sensing regions 1222 in the front camera assembly 100 a detect afirst illumination intensity and a second illumination intensityrespectively, and two light sensing regions 1222 in the rear cameraassembly 100 b detect a third illumination intensity and a fourthillumination intensity respectively. In this case, the finalillumination intensity of the electronic device 1000 can be calculatedbased on one of the following four ways.

Way one, the processor 200 may be configured to select a maximum of thefirst illumination intensity, the second illumination intensity, thethird illumination intensity and the fourth illumination intensity asthe final illumination intensity.

Way two, the processor 200 may be configured to obtain a mean value ofthe first illumination intensity and the second illumination intensityas a front illumination intensity (the front illumination intensityrefers to an illumination intensity detected by the light sensing regionin the front camera assembly), to obtain a mean value of the thirdillumination intensity and the fourth illumination intensity as a rearillumination intensity (the rear illumination intensity refers to anillumination intensity detected by the light sensing region in the rearcamera assembly), and to select a maximum of the front illuminationintensity and the rear illumination intensity as the final illuminationintensity.

Way three, the processor 200 may be configured to select a maximum ofthe first illumination intensity and the second illumination intensityas the front illumination intensity, to obtain a mean value of the thirdillumination intensity and the fourth illumination intensity as the rearillumination intensity, and to select a maximum of the frontillumination intensity and the rear illumination intensity as the finalillumination intensity.

Way four, the processor 200 may be configured to obtain a mean value ofthe first illumination intensity and the second illumination intensityas the front illumination intensity, to select a maximum of the thirdillumination intensity and the fourth illumination intensity as the rearillumination intensity, and to select a maximum of the frontillumination intensity and the rear illumination intensity as the finalillumination intensity.

In some embodiments, the processor 200 can switch the calculation wayamong the above four ways, which can be realized by the user manually orautomatically according to specific values of the illuminationintensities. For example, when each of the first illumination intensity,the second illumination intensity, the third illumination intensity andthe fourth illumination intensity is less than a predeterminedillumination intensity threshold, it may be determined that the user mayuse the electronic device 1000 in a dark environment, thus the processor200 can switch the calculation way to way one, i.e., selecting themaximum as the final illumination intensity.

To this, all of the four light sensing regions 1222 in the front cameraassembly 100 a and the rear camera assembly 100 b are configured todetect illumination intensities, and the final illumination intensityobtained by the processor 200 can reflect the actual illuminationintensity of the environment objectively.

In some operating modes in table 2, one light sensing region 1222 in thefront camera assembly 100 a detects a first illumination intensity, onelight sensing region 1222 in the rear camera assembly 100 b detects asecond illumination intensity. The processor 200 is configured to selecta maximum of the first illumination intensity and the secondillumination intensity as the final illumination intensity.

To this, each of the front camera assembly 100 a and the rear cameraassembly 100 b enables one light sensing region 1222 when working tosave energy. When one light sensing region 1222 in the front cameraassembly 100 a breaks down, the other light sensing region 1222 in thefront camera assembly 100 a can be used to detect the first illuminationintensity. When one light sensing region 1222 in the rear cameraassembly 100 b breaks down, the other light sensing region 1222 in therear camera assembly 100 b can be used to detect the second illuminationintensity. Thus, the normal use of the electronic device 1000 will benot affected.

In some operating modes in table 2, two light sensing regions 1222 inthe front camera assembly 100 a detect a first illumination intensityand a second illumination intensity respectively, and one light sensingregion 1222 in the rear camera assembly 100 b detects a thirdillumination intensity. In this way, the final illumination intensity ofthe electronic device 1000 can be calculated based on one of thefollowing two ways.

Way one, the processor 200 is configured to select a maximum of thefirst illumination intensity and the second illumination intensity asthe front illumination intensity, and to select a maximum of the frontillumination intensity and the third illumination intensity as the finalillumination intensity.

Way two, the processor 200 is configured to obtain a mean value of thefirst illumination intensity and the second illumination intensity asthe front illumination intensity, and to select a maximum of the frontillumination intensity and the third illumination intensity as the finalillumination intensity.

In some embodiments, the processor 200 can switch the calculation waybetween the above two ways. The rear camera assembly 100 b only enablesone light sensing region 1222 when working, to save energy. When onelight sensing region 1222 in the rear camera assembly 100 b breaks down,the other light sensing region 1222 in the rear camera assembly 100 bcan be used to detect the third illumination intensity. Thus, the normaluse of the electronic device 1000 will be not affected.

In some operating modes in table 2, one light sensing region 1222 in thefront camera assembly 100 a detects a first illumination intensity, andtwo light sensing regions 1222 in the rear camera assembly 100 b detecta second illumination intensity and a third illumination intensityrespectively. In this way, the final illumination intensity of theelectronic device 1000 can be calculated based on one of the followingtwo ways.

Way one, the processor 200 is configured to select a maximum of thesecond illumination intensity and the third illumination intensity asthe rear illumination intensity, and to select a maximum of the rearillumination intensity and the first illumination intensity as the finalillumination intensity.

Way two, the processor 200 is configured to obtain a mean value of thesecond illumination intensity and the third illumination intensity asthe rear illumination intensity, and to select a maximum of the rearillumination intensity and the first illumination intensity as the finalillumination intensity.

In some embodiments, the processor 200 can switch the calculation waybetween the above two ways. The front camera assembly 100 a only enablesone light sensing region 1222 when working, to save energy. When onelight sensing region 1222 in the front camera assembly 100 a breaksdown, the other light sensing region 1222 in the front camera assembly100 a can be used to detect the first illumination intensity. Thus, thenormal use of the electronic device 1000 will be not affected.

Further, the front camera assembly 100 a and the rear camera assembly100 b can realize imaging simultaneously or on time-sharing.

In one embodiment, the front camera assembly 100 a and the rear cameraassembly 100 b can realize imaging simultaneously. For example, theprocessor 200 enables both the front camera assembly 100 a and the rearcamera assembly 100 b. The rear camera assembly 100 b is configured totake a picture of the scenery behind the electronic device 1000. Thefront camera assembly 100 a is configured to take a picture of face ofthe user. The display screen 300 of the electronic device 1000 displaysthe images captured by both the front camera assembly 100 a and the rearcamera assembly 100 b simultaneously. Further, the processor 200 maystore the images captured at the same time by both the front cameraassembly 100 a and the rear camera assembly 100 b in association witheach other. When the user browses the stored images, both the sceneryand the face of the user who enjoys the scenery can be checked, thusimproving the user experience.

In another embodiment, the front camera assembly 100 a and the rearcamera assembly 100 b may realize imaging on time-sharing. For example,the front camera assembly 100 a is working while the rear cameraassembly 100 b is disabled, or the front camera assembly 100 a isdisabled but the rear camera assembly 100 b is working. In this way, theelectronic device 1000 not only can take a picture of the scenery behindthe electronic device 1000 but also can capture the selfie.

The two lens assemblies 10 in the front camera assembly 100 a mayrealize imaging simultaneously or on time-sharing to optimize theimaging quality. The two lens assemblies 10 in the rear camera assembly100 b may also realize imaging simultaneously or on time-sharing tooptimize the imaging quality, which will not be described herein.

Further, when one light sensing region 1222 in the front camera assembly100 a is in the light sensing mode and the other light sensing region1222 is in the imaging mode, the lens assembly 10 in the imaging mode inthe front camera assembly 100 a is configured to realize imaging, andthe light sensing region 1222 of the lens assembly 10 in the lightsensing mode in the front camera assembly 100 a is configured to detectthe illumination intensity as the final illumination intensity of thefront camera assembly 100 a and to control the brightness of the displayscreen 300 to change according to the detected illumination intensity ofthe environment. Similarly, when one light sensing region 1222 in therear camera assembly 100 b is in the light sensing mode and the otherlight sensing region 1222 is in the imaging mode, the lens assembly 10in the imaging mode in the rear camera assembly 100 b is configured torealize imaging, and the light sensing region 1222 of the lens assembly10 in the light sensing mode in the rear camera assembly 100 b isconfigured to detect the illumination intensity as the finalillumination intensity of the rear camera assembly 100 b and to controlthe brightness of the display screen 300 to change according to thedetected illumination intensity of the environment. In this way, thepreview can be realized when the user takes a picture, thus improvingthe user experience.

Referring to FIGS. 4-6, in some implementations, the electronic device1000 further includes a different camera assembly 600. The differentcamera assembly 600 includes an image sensor 30. The image sensor 30includes a pixel array 32 and a control circuit 34. The pixel array 30includes a light sensing region 322 and an imaging region 324. Thecontrol circuit 34 is configured to control the light sensing region 322of the image sensor 30 to detect an illumination intensity when a lightsensing instruction is received, and to control the light sensing region322 and the imaging region 324 of the image sensor 30 to collectivelyacquire an image when an imaging instruction is received.

Referring to FIG. 5, in some implementations, there is a single cameraassembly 100 configured as the front camera assembly 100 a. Thedifferent camera assembly 600 is configured as the rear camera assembly600 b.

Referring to FIG. 6, in some implementations, there is a single cameraassembly 100 configured as the rear camera assembly 100 b. The differentcamera assembly 600 is configured as the front camera assembly 600 a.

The processor 200 can perform comprehensive processing on theillumination intensities detected by the different camera assembly 600and the camera assembly 100 and the acquired images to acquire a finalillumination intensity and a final image. The processing ways may besimilar to those used by the processor 200 to acquire the finalillumination intensity and the final image according to the illuminationintensities detected by two camera assemblies 100 and the imagesacquired by the two camera assemblies 100, which will not be describedherein. The different camera assembly 600 further includes a filter 40.Light passing through the filter 40 of the different camera assembly 600reaches the imaging region 324 of the image sensor 30.

In some embodiments, a ratio of an area of the imaging region 1224 to anarea of the pixel array 122 is greater than or equal to 0.6, and/or aratio of an area of light sensing region 1222 to the area of the pixelarray 122 is greater than or equal to 0.1. In some embodiments, theratio of the area of the imaging region 1224 to the area of tie pixelarray 122 may be 0.6, 0.68, 0.74, 0.8, 0.9 or the like. The ratio of thearea of light sensing region 1222 to the area of the pixel array 122 maybe 0.1, 0.23, 0.3, 0.4 or the like. Accordingly, it ensures that theimage sensor 12 has a better imaging effect on the basis of having thefunction of detecting the illumination intensity.

In some implementations, the two pixel arrays 122 of the two lensassemblies 10 may be the same, or may not be the same.

Referring to FIGS. 7 and 8, in some implementations, the imaging region1224 in each pixel array 122 is contiguous and located in the middle ofthe pixel array 122. The light sensing region 1222 is located around theimaging region 1224. Thus, it is easy for the contiguous imaging region1224 to generate a continuous and complete image. In some embodiments,the center of the imaging region 1224 and the center of the pixel array122 may coincide. The imaging region 1224 may adopt a central symmetrystructure. The light sensing region 1222 may be located at one or moresides of the imaging region 1224.

In some implementations, the light sensing region 1222 may include aplurality of light sensing sub-regions 1225 having the same area andspaced from each other.

The illumination intensity detected by the light sensing region 1222 maybe obtained by taking illumination intensities detected by all the pixelpoints in the light sensing region 1222 into account. Thus, in order toobtain an objective illumination intensity, the light sensing region1222 is decentralized as much as possible. In other words, the lightsensing region 1222 is decentralized as a plurality of spaced lightsensing sub-regions 1225.

The plurality of light sensing sub-regions 1225 spaced from each othermay extend a detection range of the light sensing region 1222 and mayimprove an accuracy of detection of the light sensing region 1222. In anembodiment, there are four light sensing sub-regions 1225. The ratio ofthe area of each light sensing sub-region 1225 to the area of the pixelarray 122 may be 0.05. The plurality of light sensing sub-regions 1225may be arranged above, under, on the left, right of the imaging region1224 respectively.

Referring to FIG. 9, in some implementations, the plurality of lightsensing sub-regions 1225 include a left light sensing sub-region 1226and a right light sensing sub-region 1227. The left light sensingsub-region 1226 is on the left of the imaging region 1224, and the rightlight sensing sub-region 1227 is on the right of the imaging region1224. The left light sensing sub-region 1226 and the right light sensingsub-region 1227 are arranged symmetrically. The left light sensingsub-region 1226 detects a left illumination intensity (the leftillumination intensity refers to an illumination intensity detected bythe left light sensing sub-region). The right light sensing sub-region1227 detects a right illumination intensity (the right illuminationintensity refers to an illumination intensity detected by the rightlight sensing sub-region). The illumination intensity detected by thelight sensing region 1222 is a mean value of the left illuminationintensity and the right illumination intensity.

To this, influences of the left light sensing sub-region 1226 and theright light sensing sub-region 1227 to the illumination intensitydetected by the light sensing region 1222 are the same essentially, thusthe problem that the detection result is inaccurate because the lightsensing region 1222 is too sensitive to light change on the left orright of the imaging region can be avoided.

In some implementations, the plurality of light sensing sub-regions 1225include an upper light sensing sub-region 1228 and a lower light sensingsub-region 1229. The upper sensing sub-region 1228 is above the imagingregion 1224. The lower light sensing sub-region 1229 is under theimaging region 1224. The upper light sensing sub-region 1228 and thelower light sensing sub-region 1229 are arranged symmetrically. Theupper light sensing sub-region 1228 detects an upper illuminationintensity (the upper illumination intensity refers to an illuminationintensity detected by the upper light sensing sub-region). The lowerlight sensing sub-region 1229 detects a lower illumination intensity(the lower illumination intensity refers to an illumination intensitydetected by the lower light sensing sub-region). The illuminationintensity detected by the light sensing region 1222 is a mean value ofthe upper illumination intensity and the lower illumination intensity.

To this, influences of the upper light sensing sub-region 1228 and thelower light sensing sub-region 1229 to the illumination intensitydetected by the light sensing region 1222 are the same essentially, thusthe problem that the detection result is inaccurate because the lightsensing region 1222 is too sensitive to light change above or under theimaging region can be avoided.

In some implementations, the plurality of light sensing sub-regions 1225include a left light sensing sub-region 1226, a right light sensingsub-region 1227, an upper light sensing sub-region 1228 and a lowerlight sensing sub-region 1229. In an embodiment, the left light sensingsub-region 1226, the right light sensing sub-region 1227, the upperlight sensing sub-region 1228 and the lower light sensing sub-region1229 are centrally symmetric. The left light sensing sub-region 1226 andthe right light sensing sub-region 1227 are arranged symmetrically, andthe upper light sensing sub-region 1228 and the lower light sensingsub-region 1229 are arranged symmetrically. The left light sensingsub-region 1226 detects a left illumination intensity. The right lightsensing sub-region 1227 detects a right illumination intensity. Theupper light sensing sub-region 1228 detects an upper illuminationintensity. The lower light sensing sub-region 1229 detects a lowerillumination intensity. The illumination intensity detected by the lightsensing region 1222 is a mean value of the left illumination intensity,the right illumination intensity, the upper illumination intensity andthe lower illumination intensity.

To this, influences of the left light sensing sub-region 1226, the rightlight sensing sub-region 1227, the upper light sensing sub-region 1228and the lower light sensing sub-region 1229 to the illuminationintensity detected by the light sensing region 1222 are the sameessentially, thus the problem that the detection result is inaccuratebecause the light sensing region 1222 is too sensitive to light changeabove, under, on the left or right of the imaging region can be avoided.

The sub-regions being arranged symmetrically means that the sub-regionsare symmetric in area and shape with regard to the imaging region 1224.

To this, the left light sensing sub-region 1226, the right light sensingsub-region 1227, the upper light sensing sub-region 1228 and the lowerlight sensing sub-region 1229 can detect light in several directions onthe upside, downside, left side and right side of the imaging region1224 simultaneously, thus improving the accuracy of the detection resultof the light sensing region 1222.

As illustrated in FIG. 9, in the pixel array 122, the light sensingregion 1222 and the imaging region 1224 collectively acquire the mergedimage which is in the shape of “+”. The enlarged light sensing region1222 can obtain more information of the current environment, such thatthe field of view of the merged image is enlarged, thus optimizing thephotographing effect. Accordingly, when the user uses the electronicdevice 1000 to take a picture, the image in the shape of “+” can beacquired, such that the personalized demand of the user can besatisfied, thus improving the user experience.

Referring to FIGS. 10 and 11, in some implementations, the pixel array122 is in a shape of a circle or an ellipse. The imaging region 1224 isin a shape of an inscribed rectangle of the pixel array 122. The lightsensing region 1222 includes a region other than the inscribed rectangleof the circle or the ellipse.

Accordingly, the imaging region 1224 is in the middle of the pixel array122, which can acquire the image easily. The light sensing region 1222is decentralized. The light sensing region 1222 on the left of theimaging region 1224 and the light sensing region 1222 on the right ofthe imaging region 1224 are symmetric. The light sensing region 1222 hasthe same sensitivity to light change on the left and right of theimaging region 1224. The light sensing region 1222 above the imagingregion 1224 and the light sensing region 1222 under the imaging region1224 are symmetric. The light sensing region 1222 has the samesensitivity to light change above and under the imaging region 1224.Thus, the light sensing region 1222 can obtain an accurate detectionresult.

Referring to FIGS. 12 and 13, the pixel array is in a shape ofrectangle. The imaging region 1224 is in a shape of an inscribed circleor an inscribed ellipse of the rectangle. The light sensing region 1222includes a region other than the inscribed circle or the inscribedellipse of the rectangle.

Accordingly, the imaging region 1224 is in the shape of the circle orellipse. The user can obtain an image in the shape of circle or ellipsevia the imaging region 1224 without further post-processing, thussatisfying the user's personalized demand. The light sensing region 1222is decentralized, such that the accuracy of the illumination intensitydetected by the light sensing region 1222 can be improved.

Thus, the imaging region 1224 is in the middle of the pixel array 122,which can acquire the image easily. The light sensing region 1222 abovethe imaging region 1224 and the light sensing region 1222 under theimaging region 1224 are symmetric. The light sensing region 1222 on theleft of the imaging region 1224 and the light sensing region 1222 on theright of the imaging region 1224 are symmetric.

Referring to FIGS. 14 and 15, in some implementations, the imagingregion 1224 is contiguous and the light sensing region 1222 iscontiguous. The imaging region 1224 and the light sensing region 1222share a common boundary. Two imaging regions 1224 of the two lensassemblies 10 are located between two light sensing regions 1222 of thetwo lens assemblies 10. Thus, the pixel array 122 has a simplestructure. The control circuit 124 may easily find the pixels in thecorresponding imaging region 1224 or the corresponding light sensingregion 1222 after receiving the light sensing instruction or the imaginginstruction. In some embodiments, the ratio of the area of the imagingregion 1224 to the area of the pixel array 122 is 0.8. The ratio of thearea of the light sensing region 1222 to the area of the pixel array 122is 0.2. The imaging region 1224 may be in the shape of a rectangle, suchthat the imaging region 124 may obtain an image in the shape of therectangle. The light sensing region 1222 may also be in the shape of arectangle, and a long edge of the light sensing region 1222 mayintersect a long edge of the imaging region 1224 or a short edge of theimaging region 1224.

Two imaging regions 1224 of the two lens assemblies 10 are arrangedbetween two light sensing regions 1222 of the two lens assemblies 10. Insome embodiments, as illustrated in FIG. 14, when the two lensassemblies 10 are arranged laterally, one light sensing region 1222 isarranged on the left of a left image sensor 12 and the other lightsensing region 1222 is arranged on the right of a right image sensor 12.As illustrated in FIG. 15, when the two lens assemblies 10 are arrangedlongitudinally, one light sensing region 1222 is arranged above an upperimage sensor 12 and the other light sensing region 1222 is arrangedunder a lower image sensor 12. In this way, the two light sensingregions 1222 of the camera assembly 10 can detect in wide range andobtain more accurate detection result.

The arrangement of the pixel array 122 of the image sensor 12 may bealso suitable to the arrangement of the pixel array 32 of the imagesensor 30, which will be not described herein.

Reference throughout this specification to “an embodiment,” “someembodiments,” “an example,” “a specific example,” or “some examples,”means that a particular feature, structure, material, or characteristicdescribed in connection with the embodiment or example is included in atleast one embodiment or example of the present disclosure. In thisspecification, exemplary descriptions of aforesaid terms are notnecessarily referring to the same embodiment or example. Furthermore,the particular features, structures, materials, or characteristics maybe combined in any suitable manner in one or more embodiments orexamples. Moreover, those skilled in the art could combine differentembodiments or different characteristics in embodiments or examplesdescribed in the present disclosure.

Moreover, terms of “first” and “second” are only used for descriptionand cannot be seen as indicating or implying relative importance orindicating or implying the number of the indicated technical features.Thus, the features defined with “first” and “second” may comprise orimply at least one of these features. In the description of the presentdisclosure, “a plurality of” means two or more than two, unlessspecified otherwise.

Any process or method described in a flow chart or described herein inother ways may be understood to include one or more modules, segments orportions of codes of executable instructions for achieving specificlogical functions or steps in the process, and the scope of a preferredembodiment of the present disclosure includes other implementations,wherein the order of execution may differ from that which is depicted ordiscussed, including according to involved function, executingconcurrently or with partial concurrence or in the contrary order toperform the function, which should be understood by those skilled in theart.

The logic and/or step described in other manners herein or shown in theflow chart, for example, a particular sequence table of executableinstructions for realizing the logical function, may be specificallyachieved in any computer readable medium to be used by the instructionexecution system, device or equipment (such as the system based oncomputers, the system comprising processors or other systems capable ofacquiring the instruction from the instruction execution system, deviceand equipment and executing the instruction), or to be used incombination with the instruction execution system, device and equipment.As to the specification, “the computer readable medium” may be anydevice adaptive for including, storing, communicating, propagating ortransferring programs to be used by or in combination with theinstruction execution system, device or equipment. More specificexamples of the computer-readable medium comprise but are not limitedto: an electronic connection (an electronic device) with one or morewires, a portable computer enclosure (a magnetic device), a randomaccess memory (RAM), a read-only memory (ROM), an erasable programmableread-only memory (EPROM or a flash memory), an optical fiber device anda portable compact disk read-only memory (CDROM). In addition, thecomputer-readable medium may even be a paper or other appropriate mediumcapable of printing programs thereon, this is because, for example, thepaper or other appropriate medium may be optically scanned and thenedited, decrypted or processed with other appropriate methods whennecessary to obtain the programs in an electric manner, and then theprograms may be stored in the computer memories.

It should be understood that each part of the present disclosure may berealized by hardware, software, firmware or their combination. In theabove embodiments, a plurality of steps or methods may be realized bythe software or firmware stored in the memory and executed by theappropriate instruction execution system. For example, if it is realizedby the hardware, likewise in another embodiment, the steps or methodsmay be realized by one or a combination of the following techniquesknown in the art: a discrete logic circuit having a logic gate circuitfor realizing a logic function of a data signal, an application-specificintegrated circuit having an appropriate combination logic gate circuit,a programmable gate array (PGA), a field programmable gate array (FPGA),etc.

Those skilled in the art shall understand that all or parts of the stepsin the above exemplifying method for the present disclosure may beachieved by commanding the related hardware with programs, the programsmay be stored in a computer-readable storage medium, and the programscomprise one or a combination of the steps in the method embodiments ofthe present disclosure when running on a computer.

In addition, each function cell of the embodiments of the presentdisclosure may be integrated in a processing module, or these cells maybe separate physical existence, or two or more cells are integrated in aprocessing module. The integrated module may be realized in a form ofhardware or in a form of software function modules. When the integratedmodule is realized in a form of software function module and is sold orused as a standalone product, the integrated module may be stored in acomputer-readable storage medium.

The storage medium mentioned above may be read-only memories, magneticdisks, CD, etc.

Although embodiments of present disclosure have been shown and describedabove, it should be understood that above embodiments are justexplanatory, and cannot be construed to limit the present disclosure,for those skilled in the art, changes, alternatives, and modificationscan be made to the embodiments without departing from spirit, principlesand scope of the present disclosure.

What is claimed is:
 1. A camera assembly, comprising at least two imagesensors, wherein each image sensor comprises: a pixel array, comprisinga light sensing region and an imaging region; and a control circuit,configured to: receive a light sensing instruction to control the lightsensing region to detect an illumination intensity; and receive animaging instruction to control the light sensing region and the imagingregion to collectively perform a photographic process to acquire animage.
 2. The camera assembly according to claim 1, wherein the controlcircuit is further configured to: receive the imaging instruction tocontrol the light sensing region to detect a color temperature of acurrent environment; and control the imaging region to perform thephotographic process according to the color temperature to acquire acolor-temperature adjusted image.
 3. The camera assembly according toclaim 1, wherein the control circuit is further configured to receivethe imaging instruction to control the light sensing region and theimaging region to collectively perform the photographic process toacquire a merged image.
 4. The camera assembly according to claim 1,wherein the imaging region of each image sensor is contiguous andlocated in the middle of the pixel array, and the light sensing regionof each image sensor is located around the imaging region.
 5. The cameraassembly according to claim 4, wherein the light sensing region of eachimage sensor comprises at least two light sensing sub-regions havingbasically a same area and spaced from each other.
 6. The camera assemblyaccording to claim 5, wherein, the at least two light sensingsub-regions comprise a left light sensing sub-region on the left of theimaging region and a right light sensing sub-region on the right of theimaging region; wherein the left light sensing sub-region and the rightlight sensing sub-region are arranged symmetrically, the left lightsensing sub-region is configured to detect a left illuminationintensity, the right light sensing sub-region is configured to detect aright illumination intensity, and the illumination intensity detected bythe light sensing region is a mean value of the left illuminationintensity and the right illumination intensity; or the at least twolight sensing sub-regions comprise an upper light sensing sub-regionabove the imaging region and a lower light sensing sub-region below theimaging region; wherein the upper light sensing sub-region and the lowerlight sensing sub-region are arranged symmetrically, the upper lightsensing sub-region is configured to detect an upper illuminationintensity, the lower light sensing sub-region is configured to detect alower illumination intensity, and the illumination intensity detected bythe light sensing region is a mean value of the upper illuminationintensity and the lower illumination intensity; or the at least twolight sensing sub-regions comprise a left light sensing sub-region onthe left of the imaging region, a right light sensing sub-region on theright of the imaging region, an upper light sensing sub-region above theimaging region and a lower light sensing sub-region below the imagingregion; wherein the left light sensing sub-region and the right lightsensing sub-region are arranged symmetrically, the upper light sensingsub-region and the lower light sensing sub-region are arrangedsymmetrically, the left light sensing sub-region is configured to detecta left illumination intensity, the right light sensing sub-region isconfigured to detect a right illumination intensity, the upper lightsensing sub-region is configured to detect an upper illuminationintensity, the lower light sensing sub-region is configured to detect alower illumination intensity, and the illumination intensity detected bythe light sensing region is a mean value of the left illuminationintensity, the right illumination intensity, the upper illuminationintensity and the lower illumination intensity.
 7. The camera assemblyaccording to claim 1, wherein the pixel array is in a shape of one of acircle and an ellipse, the imaging region is in a shape of an inscribedrectangle of the pixel array, and the light sensing region comprises aregion other than the inscribed rectangle of the one of the circle andthe ellipse.
 8. The camera assembly according to claim 1, wherein thepixel array is in a shape of a rectangle, the imaging region is in ashape of one of an inscribed circle and an inscribed ellipse of thepixel array, and the light sensing region comprises a region other thanthe one of the inscribed circle and the inscribed ellipse of therectangle.
 9. The camera assembly according to claim 1, wherein theimaging region of each image sensor is contiguous and the light sensingregion of each image sensor is contiguous; the imaging region and thelight sensing region of each image sensor share a common boundary. 10.The camera assembly according to claim 9, wherein the camera assemblycomprises two image sensors, and two imaging regions of the two imagesensors are located between two light sensing regions of the two imagesensors.
 11. The camera assembly according to claim 1, wherein the pixelarray of each image sensor is configured such that at least one offollowing conditions is satisfied: a ratio of an area of the imagingregion of said image sensor to an area of the pixel array of said imagesensor being greater than or equal to 0.6; and a ratio of an area of thelight sensing region of said image sensor to the area of the pixel arrayof said image sensor being greater than or equal to 0.1.
 12. A mobileelectronic device, comprising a camera assembly and a processor;wherein, the camera assembly comprises at least two image sensors;wherein each image sensor comprises: a pixel array, comprising a lightsensing region and an imaging region; and a control circuit, configuredto: receive a light sensing instruction to control the light sensingregion to detect an illumination intensity; and receive an imaginginstruction to control the light sensing region and the imaging regionto collectively perform a photographic process to acquire an image; andthe processor is configured to generate the light sensing instructionand the imaging instruction.
 13. The mobile electronic device accordingto claim 12, wherein the mobile electronic device comprises one cameraassembly configured as a front camera assembly; wherein when lightsensing regions of at least two image sensors of the camera assemblydetect a first illumination intensity and a second illuminationintensity respectively, the processor is configured to: determine amaximum of the first illumination intensity and the second illuminationintensity as a final illumination intensity; or obtain a mean value ofthe first illumination intensity and the second illumination intensityas a final illumination intensity.
 14. The mobile electronic deviceaccording to claim 12, wherein the mobile electronic device comprises atleast two camera assemblies, one of the at least two camera assembliesis configured as a front camera assembly and a further one of the atleast two camera assemblies is configured as a rear camera assembly;wherein when two light sensing regions of the front camera assemblydetect a first illumination intensity and a second illuminationintensity respectively, and two light sensing regions of the rear cameraassembly detect a third illumination intensity and a fourth illuminationintensity respectively, the processor is configured to: determine amaximum of the first illumination intensity, the second illuminationintensity, the third illumination intensity and the fourth illuminationintensity as a final illumination intensity; or obtain a mean value ofthe first illumination intensity and the second illumination intensityas a front illumination intensity, obtain a mean value of the thirdillumination intensity and the fourth illumination intensity as a rearillumination intensity, and determine a maximum of the frontillumination intensity and the rear illumination intensity as a finalillumination intensity; or determine a maximum of the first illuminationintensity and the second illumination intensity as a front illuminationintensity, obtain a mean value of the third illumination intensity andthe fourth illumination intensity as a rear illumination intensity, anddetermine a maximum of the front illumination intensity and the rearillumination intensity as a final illumination intensity; or obtain amean value of the first illumination intensity and the secondillumination intensity as a front illumination intensity, determine amaximum of the third illumination intensity and the fourth illuminationintensity as a rear illumination intensity, and determine a maximum ofthe front illumination intensity and the rear illumination intensity asa final illumination intensity.
 15. The mobile electronic deviceaccording to claim 12, wherein the mobile electronic device comprises atleast two camera assemblies, one of the at least two camera assembliesis configured as a front camera assembly and a further one of the atleast two camera assemblies is configured as a rear camera assembly;wherein when a light sensing region of the front camera assembly detectsa first illumination intensity, and a light sensing region of the rearcamera assembly detects a second illumination intensity, the processoris configured to: determine a maximum of the first illuminationintensity and the second illumination intensity as a final illuminationintensity.
 16. The mobile electronic device according to claim 12,wherein the mobile electronic device comprises at least two cameraassemblies, one of the at least two camera assemblies is configured as afront camera assembly and a further one of the at least two cameraassemblies is configured as a rear camera assembly; wherein when twolight sensing regions of the front camera assembly detect a firstillumination intensity and a second illumination intensity respectively,and a light sensing region of the rear camera assembly detects a thirdillumination intensity, the processor is configured to: determine amaximum of the first illumination intensity and the second illuminationintensity as a front illumination intensity, and determine a maximum ofthe front illumination intensity and the third illumination intensity asa final illumination intensity; or obtain a mean value of the firstillumination intensity and the second illumination intensity as a frontillumination intensity, and determine a maximum of the frontillumination intensity and the third illumination intensity as a finalillumination intensity.
 17. The mobile electronic device according toclaim 12, wherein the mobile electronic device comprises at least twocamera assemblies, one of the at least two camera assemblies isconfigured as a front camera assembly and a further one of the at leasttwo camera assemblies is configured as a rear camera assembly; whereinwhen a light sensing region of the front camera assembly detects a firstillumination intensity, and two light sensing regions of the rear cameraassembly detect a second illumination intensity and a third illuminationintensity respectively, the processor is configured to: determine amaximum of the second illumination intensity and the third illuminationintensity as a rear illumination intensity, and determine a maximum ofthe rear illumination intensity and the first illumination intensity asa final illumination intensity; or obtain a mean value of the secondillumination intensity and the third illumination intensity as a rearillumination intensity, and determine a maximum of the rear illuminationintensity and the first illumination intensity as a final illuminationintensity.
 18. The mobile electronic device according to claim 12,further comprising another camera assembly, wherein the another cameraassembly comprises an image sensor comprising: a pixel array, comprisinga light sensing region and an imaging region; and a control circuit,configured to: determine whether the another camera assembly is in animaging mode; receive a light sensing instruction to control the lightsensing region of the image sensor of the another camera assembly todetect an illumination intensity when the another camera assembly is notin the imaging mode; and receive an imaging instruction to control thelight sensing region and the imaging region of the image sensor of theanother camera assembly to collectively perform a photographic processto acquire an image when the another camera assembly is in the imagingmode.
 19. The mobile electronic device according to claim 18, whereinthe mobile electronic device comprises one camera assembly configured asone of a front camera assembly and a rear camera assembly, and theanother camera assembly is configured as the other one of the frontcamera assembly and the rear camera assembly.
 20. The mobile electronicdevice according to claim 12, wherein the image sensors in the cameraassembly are configured such that, when one image sensor in the cameraassembly is in an imaging mode, the other image sensor in the cameraassembly is in a light sensing mode; an illumination intensity detectedby the image sensor in the light sensing mode is configured as theillumination intensity of the camera assembly.